I had to have the upper trailing arm mounting points in my Chevelle welded today (the bolt holes were elongated). My upper trailing arms are stout, but use heim joints on the frame end. It turns out that the bolts didn't have enough thread, so when they were torqued, the bolts were not completely tight. And, the heim joints are now shot.
I have UMI lower trailing arms with Roto-Joints at both end, plus Roto-Joints on the differential housing. Since there is only a $30 difference between the arms with poly bushings and the one with the Roto-Joints, I am leaning towards the Roto-Joint units. Purely street driven, but I think the Roto-Joints will outlast the poly bushings. Which would be best?
I have UMI lower trailing arms with Roto-Joints at both end, plus Roto-Joints on the differential housing. Since there is only a $30 difference between the arms with poly bushings and the one with the Roto-Joints, I am leaning towards the Roto-Joint units. Purely street driven, but I think the Roto-Joints will outlast the poly bushings. Which would be best?
